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I had to remove my laptop battery as it was bloated and seemed to be a bit of a safety issue.

Since removing it I cant boot Ubuntu 16.04 any longer. I still get into Grub and can boot my Windows 10, but neither the installed version of Ubuntu nor a bootable USB stick work.

When booting from the installed version I get the following error message: 

Ignoring BGRT: Failed to allocate memory for image

When booting from the USB I get: 

INFO: Task swapper/0:1 blocked for more than 120 seconds  
Not tainted 4.4.0-21-generic #37 Ubuntu*"

I have a Gigabyte P34G v2. Do you guys have an idea how to fix this? (apart of getting a new battery)
Please let me know if you need any more info.

Byte Commander
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JuliusR
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  • BGRT is the boot graphics resource table, which just has to do with the image that's displayed at boot time before the kernel gets going. That's actually a fairly innocuous issue. Is it the only error message you get when trying to boot from the hard disk? – Alcuin Arundel Jul 10 '16 at 18:55
  • yes it is. is it possible to just skip that? – JuliusR Jul 10 '16 at 19:03
  • Is the behaviour any different when you select Advanced options for Ubuntu > Ubuntu, with Linux [kernel version] (recovery mode) in the GRUB menu? Does the recovery menu appear? Does it continue to boot when you select Resume from that menu? Do you get to a working root shell when you select the root option from the recovery menu? – Byte Commander Jul 10 '16 at 19:03
  • Is this the first time you've seen this error message? If so, then what might have happened (just a guess here) is that when you removed the battery (which is an internal one on that machine), the ACPI tables in the firmware might have been changed. – Alcuin Arundel Jul 10 '16 at 19:07
  • @ByteCommander tried that. i dont get into the recovery mode. i get stuck at 'clocksource: switched to clocksource tsc' and after that i get 'task kworker/u16:2:87 blocked for more than 120 seconds' – JuliusR Jul 10 '16 at 19:18
  • @AlcuinArundel yea thats the first time. worked well before removing the battery. – JuliusR Jul 10 '16 at 19:20
  • Can you try plugging the battery back in temporarily and seeing what happens? – Alcuin Arundel Jul 10 '16 at 19:24

1 Answers1

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I too have a Gigabyte P34G v2, with a swollen battery that I have removed. It appears that there is an ACPI bug that prevents ubuntu from booting. A work around is to turn ACPI off. Setting acpi=off in the grub boot string worked for me. More details here (plus a method to make this change permanent): How do I disable ACPI when booting?

Community
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Sameer Morar
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  • btw @sameer, did you notice any performances regressions? I might be wrong but it seems like my p34 is a bit more laggy – martpie Apr 05 '17 at 09:21
  • yes, ok, acpi off disable multi-core cpu, so the whole os is running with a single-core. Not a real solution unless you get a new battery quickly – martpie Apr 05 '17 at 09:37
  • @KeitIG, yeah, it wasn't ideal. However, this allowed me to continue using my laptop after sending my battery off to Gigabyte for evaluation and replacement. I was not keen on sending the whole laptop, and they agreed to send out a new battery on receipt of the swollen battery. – Sameer Morar Apr 06 '17 at 12:56
  • Yep, that's what I did, I bought a new one, will have to deal with it for a few days – martpie Apr 06 '17 at 13:19
  • Further update, as my battery has failed again, and I decided to not replace it. To have ACPI working without the battery installed, I changed the grub boot string to include acpi.power_nocheck=1 instead of acpi=off – Sameer Morar Jan 08 '18 at 14:04